If you go on the Escapees RV club forum “HDT” there will be people carrying smarts on the back of trucks who will tell you exactly how much break over angle you need, and smart dimensions.
Also the “Discount Ramps” company might still have a ramp calculator on which you plug in the wheelbase and ground clearance and height dimensions to solve ramp length needed. You can math out the minimums that will work and have those dimensions wheith you when you are trailer shopping.
I’ve seen a few toyhaulers carrying smarts in my travels but can’t say what make and model they were.
My Carriage C-Force would load a smart it has a well thought out ramp with a beaver tail sloped floor section inside.
